Question

If f(1)=1 and f(n)=(n-2)^2 +n then find the value of f(3)

Answer 1

f(3) =4

Explanation:

f(n)=(n-2)^2 +n

We want to find f(3)

Put in n=3

f(3) = (3-2) ^2 +3

f(3) = 1^2 +3

f(3) =1+3

f(3) =4